Home / 100,317.18-138,414.97-68,056.20

Finding the Fourth Proportional to 100,317.18, 138,414.97 and 68,056.20

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Solution

The fourth proportional to 100,317.18, 138,414.97 and 68,056.20 is: 93,902.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,317.18 : 138,414.97 = 68,056.20 : x
  2. Step 2: Convert to fraction form
    100,317.18/138,414.97 = 68,056.20/x
  3. Step 3: Cross multiply
    100,317.18x = 138,414.97 × 68,056.20
  4. Step 4: Simplify right side
    100,317.18x = 9,419,996,881.31
  5. Step 5: Solve for x
    x = 9,419,996,881.31/100,317.18
  6. Step 6: Final answer
    x = 93,902.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.